thanks for your advice Robert, I know where I should go in order to change headlamps and I know not to touch the bulb, but my question still is " There are 2 long bolts holding the headlight housing in position, I can only remove one, the other spins in place. What's the trick to removing the long bolt that spins in place and won't come out?"

Thanks, Jerrythanks for your advice Robert, I know where I should go in order to change headlamps and I know not to touch the bulb, but my question still is " There are 2 long bolts holding the headlight housing in position, I can only remove one, the other spins in place. What's the trick to removing the long bolt that spins in place and won't come out?"
Thanks, Jerry

Headlights are changed from within the engine compartment... if it's the side the battery is on.. it will likely need to be removed first... do not touch the bulbs with your fingers as that shortens their life.

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You half to remove the Headlamp housing to change it. Here is the instructions out of the factory manual.
Tell me if this works for you?
HEADLAMP HOUSING - CONCORDE/LHS/330M
Headlamp lens fogging is a normal condition and does not require service unless excessive or continual. Moisture will vent from tubes or vents located on the back of the lamp.
REMOVAL

Align the two fascia studs to the fender vertical attachments, at the same time align the fascia groove on the horizontal flange with the fender drive pin. Push fascia rearward to engage the fasteners.